Lipitor, also known as atorvastatin, is a medication that is commonly used to lower cholesterol levels. Garlic, on the other hand, has been shown to have potential cholesterol-lowering effects. However, there is limited information available on whether or not Lipitor can counteract the effects of garlic.

According to DrugPatentWatch [1], there are no known drug interactions between Lipitor and garlic. However, it is important to note that garlic supplements may interact with certain medications, including blood thinners and some HIV medications.

A study published in the Journal of Nutrition [2] found that garlic supplementation did not have a significant effect on cholesterol levels in individuals taking atorvastatin. The study included 192 participants who were randomly assigned to receive either a garlic supplement or a placebo for 12 weeks. The researchers found that there was no significant difference in cholesterol levels between the two groups.

ConsumerLab [3] also notes that there is limited evidence to suggest that garlic supplements may have cholesterol-lowering effects. However, they caution that garlic supplements may interact with certain medications, including statins like Lipitor.

Overall, while there is limited information available on the potential interaction between Lipitor and garlic, it appears that there is no significant interaction between the two. However, individuals taking Lipitor should talk to their healthcare provider before taking any supplements, including garlic supplements, to ensure that there are no potential interactions or risks.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2997463/
[3] https://www.consumerlab.com/answers/which-drugs-should-be-avoided-when-taking-statins/statin-supplement-interactions/